Question Two, 11 kV, 30 MVA 3-0 star connected generators operates in parallel. The positive, negative and zero sequence reactance of each being respectively, j0.16, j0.14, j0.08 p.u. The star point of one of the generators is isolated and that of the other is solidly grounded. Find the fault current for a fault impedance of j0.0892 for line to line fault on terminals of generators?

Question Two, 11 kV, 30 MVA 3-0 star connected generators operates in parallel. The positive, negative and zero sequence reactance of each being respectively, j0.16, j0.14, j0.08 p.u. The star point of one of the generators is isolated and that of the other is solidly grounded. Find the fault current for a fault impedance of j0.0892 for line to line fault on terminals of generators?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

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